They for discov'ry flock, or curing.
He had been long t'wards mathematics,
Opticks, philosophy, and staticks,
Magick, horoscopy, astrology,
And was old dog at physiology:
But, as a dog that turns the spit,
Bestirs himself, and plies his feet
To climb the wheel, but all in vain,
His own weight brings him down again;